Multiple choice

Only ______ of Earth's water is fit for human consumption

  1. 3%

  2. 10%

  3. 7%

  4. 15%

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

About 3% of Earth's total water is freshwater, which is the only water suitable for human consumption. The rest 97% is saltwater in oceans and seas, which cannot be used for drinking without extensive treatment.